commit 8895e868239b5cb2a22feee7c7c5c41d5484e3d3
author Walter Erquinigo <wallace@fb.com> Wed Aug 03 11:33:40 2022 -0700
committer Copybara-Service <copybara-worker@google.com> Wed Aug 03 11:36:04 2022 -0700
tree b85b87f0c84bd561496ac61316cabb24ab533c92
parent 91f3d9b80ac74e8e06c967c792bf5c226e85c08b

[NFC][intel pt] Improve troubleshooting message

GitOrigin-RevId: 371610793491fcd1c9af114a0de0cdda9a4408b0

packages/Python/lldbsuite/test/tools/intelpt/intelpt_testcase.py

diff --git a/packages/Python/lldbsuite/test/tools/intelpt/intelpt_testcase.py b/packages/Python/lldbsuite/test/tools/intelpt/intelpt_testcase.py
index 511dd68..5c70bad 100644
--- a/packages/Python/lldbsuite/test/tools/intelpt/intelpt_testcase.py
+++ b/packages/Python/lldbsuite/test/tools/intelpt/intelpt_testcase.py
@@ -44,7 +44,8 @@
                 return False
         if not is_supported():
             self.skipTest("Per cpu tracing is not supported. You need "
-                "/proc/sys/kernel/perf_event_paranoid to be 0 or -1.")
+                "/proc/sys/kernel/perf_event_paranoid to be 0 or -1. "
+                "You can use `sudo sysctl -w kernel.perf_event_paranoid=-1` for that.")
 
     def getTraceOrCreate(self):
         if not self.target().GetTrace().IsValid():

source/Plugins/Process/Linux/IntelPTMultiCoreTrace.cpp

diff --git a/source/Plugins/Process/Linux/IntelPTMultiCoreTrace.cpp b/source/Plugins/Process/Linux/IntelPTMultiCoreTrace.cpp
index 8f646c1..a4794e7 100644
--- a/source/Plugins/Process/Linux/IntelPTMultiCoreTrace.cpp
+++ b/source/Plugins/Process/Linux/IntelPTMultiCoreTrace.cpp
@@ -29,7 +29,7 @@
   return createStringError(
       inconvertibleErrorCode(),
       "%s\nYou might need to rerun as sudo or to set "
-      "/proc/sys/kernel/perf_event_paranoid to a value of 0 or -1.",
+      "/proc/sys/kernel/perf_event_paranoid to a value of 0 or -1. You can use `sudo sysctl -w kernel.perf_event_paranoid=-1` for that.",
       toString(std::move(error)).c_str());
 }